biogas processing system Applications

Collect valuable biogas from anaerobic digestion systems with a GTI gas collection cover. In waste-to-energy projects, the collected biogas can be used as a renewable fuel to generate process heat or electricity, helping to offset energy costs.

“Biogas” means a mixture of various types of gas (mostly methane) produced by bacterial fermentation in anaerobic conditions(absence of oxygen) of organic residues from waste, decaying plant, carcasses in putrescence. The analyzers of biogas by Infrared cells carry out the continuous analysis of CH4, O2, CO2, H2S and NH3. The whole process sees the decomposition of organic material by some types of bacteria, producing carbon dioxide, molecular hydrogen and methane(methane conversion of organic compounds).

AppliTek`s solutions in this field concentrate on the process efficiency of anaerobic digesters. Many existing digesters give unnecessary problems, which arise due to inadequacies in the process or process control system. AppliTek has developed a unique instrument to measure and control the key processes in the anaerobic fermentation. Compact gas analyzers with proprietary technology can be implemented to check the biogas yield.

Fast, accurate and reliable measurement of CO2 and CH4 concentration. Methane and CO2 concentration measurements are a key part of the evaluation of the anaerobic digestion process. Too high or too low gas concentration levels can indicate a change in the efficiency of the fermentation process. AD process control systems measure the Methane content (and often the CO2 content) of the gas stream to control or evaluate the AD process and warn of problems. Edinburgh Sensors provide high performance OEM gas detectors that are able to give fast, accurate and reliable measurements of both CO2 and Methane concentrations.

Organic waste can become a problem anywhere where the disposal of waste occurs over a longer period. This challenge arises for example in the shipping industry. With Mercodor waste food shredders valuable space is saved and food protected from contamination. The processed food leftovers serve as the raw material for biodiesel production or are used for the production of green energy in the form of electricity and heat from biogas plants.

Hiden gas analysis systems provide for high sensitivity, wide dynamic range, real-time analysis of almost any gas and vapour. Hiden’s application specific gas analysis systems are tailored to meet the specific application requirements, and include a range of special sampling, vacuum pumping and vacuum accessories. Hot zone sampling accessories are included for evolved gas analysis from furnaces, and thermo gravimetric analysers, TGA, for example. Thermal analysis methods are vital for catalysis characterization. For thermal analysis including TPD/TPO/TPR, studies, Hiden gas analysis systems include enhanced pumping for hydrogen and special close coupled sampling to the TPD/TPO/TPR reactor for optimum thermal analysis response. In Biogas applications the simultaneous analysis of H2S, CO2, water vapour and CH4 in the PPM to 100% concentration range provides vital information for process development and process monitoring.

Anaerobic digestion is a series of processes in which microorganisms break down biodegradable material in the absence of oxygen, used for industrial or domestic purposes to manage waste and/or to release energy. It is widely used as part of the process to treat wastewater, like Upflow Anaerobic Sludge Blanket (UASB) reactors. As part of an integrated waste management system, anaerobic digestion reduces the emission of landfill gas into the atmosphere. Anaerobic digestion is widely used as a renewable energy source because the process produces a methane and carbon dioxide rich biogas suitable for energy production, helping to replace fossil fuels. The nutrient-rich digestate which is also produced can be used as fertilizer. The digestion process begins with bacterial hydrolysis of the input materials in order to break down insoluble organic polymers such as carbohydrates and make them available for other bacteria. Acidogenic bacteria then convert the sugars and amino acids into carbon dioxide, hydrogen, ammonia, and organic acids. Acetogenic bacteria then convert these resulting organic acids into acetic acid, along with additional ammonia, hydrogen, and carbon dioxide. Finally, methanogens convert these products to methane and carbon dioxide.

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